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Temperature changes at the implant-bone interface during simulated surface decontamination with an Er:YAG laser.
Matthias Kreisler1, Haitham Al Haj, Bernd d'Hoedt
1Department of Oral Surgery, Johannes Gutenberg-University Mainz, Germany. MatthiasKreisler@web.de
The International Journal of Prosthodontics
|December 12, 2002
Summary
The Er:YAG laser effectively decontaminates dental implant surfaces without causing excessive heat. This laser treatment appears safe for periimplant bone, even with hydroxyapatite-coated implants.
Area of Science:
- Biomaterials science
- Dental implantology
- Laser dentistry
Background:
- Peri-implantitis is a common complication of dental implants.
- Surface decontamination is crucial for managing peri-implantitis.
- The Er:YAG laser is a potential tool for implant surface decontamination.
Purpose of the Study:
- To evaluate temperature changes at the implant-bone interface during Er:YAG laser decontamination.
- To assess the thermal effects of laser treatment on different implant surfaces.
Main Methods:
- Simulated decontamination of implants with varied surfaces (titanium plasma sprayed, sandblasted/acid-etched, hydroxyapatite-coated) in pig femur blocks.
- Er:YAG laser irradiation (60-120 mJ, 10 pps) applied to a 6 mm2 defect near the implant.
- Temperature monitoring at three peri-implant bone levels using K-type thermocouples in a 37°C water bath.
Main Results:
- Temperatures at the implant-bone interface remained below 47°C after 120 seconds of irradiation.
- Hydroxyapatite-coated implants showed significantly higher temperature increases compared to titanium surfaces (P < .001).
Conclusions:
- Er:YAG laser decontamination of implant surfaces does not cause excessive peri-implant bone heating within the tested energy range.
- The Er:YAG laser appears clinically safe for implant surface decontamination, particularly for the studied surfaces.